code: def test_column_name_presence(process_test_df):
      """Raise ValueError if `column_name` is not in dataframe."""
      with pytest.raises(ValueError):
          process_test_df.process_text(
              column_name="Test", string_function="lower"
          )
  
imports: import numpy
  import pandas
  import pytest
  from pandas.testing import assert_frame_equal
label_desc: Use image node_id 5 for calling a global function with example usage: test_column_name_presence(process_test_df) without return types